Home / 153,121.28-211,281.68-85,136.32

Finding the Fourth Proportional to 153,121.28, 211,281.68 and 85,136.32

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Solution

The fourth proportional to 153,121.28, 211,281.68 and 85,136.32 is: 117,473.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,121.28 : 211,281.68 = 85,136.32 : x
  2. Step 2: Convert to fraction form
    153,121.28/211,281.68 = 85,136.32/x
  3. Step 3: Cross multiply
    153,121.28x = 211,281.68 × 85,136.32
  4. Step 4: Simplify right side
    153,121.28x = 17,987,744,718.62
  5. Step 5: Solve for x
    x = 17,987,744,718.62/153,121.28
  6. Step 6: Final answer
    x = 117,473.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.